On 29 Mar 2011 at 21:36, Tony Duell wrote:
Has anyone ever repaired such a Network block and
knows how to shift
No, but it sounds like plain old pitch. It's still used (I get brass
instrument leadpipes pre-filled with the stuff for kink-less
Apply heat, but not too aggressively--if it catches fire, the smoke
is really nasty. A heat gun on a low setting might do the trick.